公开(公告)号：US20210328829A1

公开(公告)日：2021-10-21

申请号：US17221807

申请日：2021-04-04

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Sivasankaran Nagarajan ,  Yasser Salim Sait ,  Venkatavaradhan Devarajan

IPC: H04L12/423 ,  H04L12/46 ,  H04L12/437 ,  H04L29/12 ,  H04L12/741 ,  H04L12/24

Abstract: Examples disclosed herein relate to managing a second ring link failure in a multi-ring Ethernet network. In an example, an inter-connection network node in a multi-ring Ethernet network comprising a major ring and a sub-ring may propagate a signal failure (SF) event, received in response to a second ring link failure in the major ring, to one or more nodes in the sub-ring. In response to receiving the SF event, a Ring Protection Link (RPL) on the sub-ring may be unlocked to allow network traffic through the RPL and avoid loop formation on the multi-ring Ethernet network. The sub-ring may be moved to the ring protection switching state; including performing a filtering database (FDB) flush at every node on the multi-ring Ethernet network whereby all MAC addresses and related port associations for traffic forwarding are cleared from the FDB.

公开(公告)号：US11652664B2

公开(公告)日：2023-05-16

申请号：US17221807

申请日：2021-04-04

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Sivasankaran Nagarajan ,  Yasser Salim Sait ,  Venkatavaradhan Devarajan

IPC: H04L12/423 ,  H04L12/46 ,  H04L12/437 ,  H04L45/74 ,  H04L41/0604 ,  H04L12/42 ,  H04L101/622

CPC classification number: H04L12/423 ,  H04L12/437 ,  H04L12/4625 ,  H04L41/0627 ,  H04L45/74 ,  H04L2012/421 ,  H04L2101/622

Abstract: Examples disclosed herein relate to managing a second ring link failure in a multi-ring Ethernet network. In an example, an inter-connection network node in a multi-ring Ethernet network comprising a major ring and a sub-ring may propagate a signal failure (SF) event, received in response to a second ring link failure in the major ring, to one or more nodes in the sub-ring. In response to receiving the SF event, a Ring Protection Link (RPL) on the sub-ring may be unlocked to allow network traffic through the RPL and avoid loop formation on the multi-ring Ethernet network. The sub-ring may be moved to the ring protection switching state, including performing a filtering database (FDB) flush at every node on the multi-ring Ethernet network whereby all MAC addresses and related port associations for traffic forwarding are cleared from the FDB.